County annual report · FIPS 55093
2025 Pierce County, WI Power Outage Report
In 2025, customers in Pierce County, WI went without power for an average of 2.0 hours, a total of 34K customer-hours (Wisconsin average 3.9 hours). That ranks 42nd worst of 72 Wisconsin counties and 2407th of 3,000 nationally.
Compared with WI, the US and 2024
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Pierce County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 18, 2025 13:15 | August 18, 2025 18:15 | 5h | 4,120 | 4,122 |
| 2 | February 22, 2025 14:15 | February 22, 2025 16:45 | 2h 30m | 1,421 | 3,553 |
| 3 | May 2, 2025 09:45 | May 2, 2025 15:00 | 5h 15m | 1,421 | 4,646 |
| 4 | July 7, 2025 17:00 | July 7, 2025 22:00 | 5h | 1,089 | 2,642 |
| 5 | October 11, 2025 15:30 | October 11, 2025 18:15 | 2h 45m | 1,013 | 1,936 |
| 6 | August 15, 2025 21:45 | August 16, 2025 17:45 | 20h | 998 | 3,886 |
| 7 | July 29, 2025 03:30 | July 30, 2025 00:45 | 21h 15m | 447 | 5,373 |
| 8 | September 27, 2025 13:30 | September 27, 2025 15:30 | 2h | 341 | 354 |
| 9 | August 7, 2025 10:45 | August 7, 2025 17:45 | 7h | 170 | 1,087 |
| 10 | December 10, 2025 18:45 | December 10, 2025 20:15 | 1h 30m | 115 | 144 |
Outage episodes by size in 2025: 12 reached 100+ customers, 5 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Pierce County reported on EIA Form 861 for 2025, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Northern States Power Co | 2024 | 3.1 hrs | 1.06 | 2.0 hrs | 0.81 |
| Dunn County Electric Coop | 2024 | 1.8 hrs | 0.84 | 84 min | 0.69 |
| Pierce-Pepin Coop Services | 2018 | 3.0 hrs | 1.10 | 2.9 hrs | 1.04 |
| St Croix Electric Coop | 2018 | 1.8 hrs | 0.69 | 1.7 hrs | 0.68 |
| City of River Falls | 2024 | 13 min | 0.15 | 13 min | 0.15 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Wisconsin's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 16,786 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Pierce County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Pierce County, WI annual power outage report, 2025, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2025/wisconsin/pierce-county